What hardiness zone is Quebec City?

Quebec City is in Canadian Hardiness Zone 4. Transitional – wider plant palette, some tender shrubs

When is the last frost in Quebec City?

The average last frost date in Quebec City is Early May (May 5–15). Always watch local forecasts as it varies year to year.

What vegetables grow best in Quebec City?

Zone 4 gardens in Quebec City do well with cold-hardy brassicas, root vegetables, and many perennials. With a short frost-free period of around 130 days, choose varieties with days-to-maturity suited to your zone.

Gardening in Quebec City, Quebec | GardeningKnowHow.ca

Gardening in Quebec

Quebec gardeners embrace the challenge of Zone 3–5 conditions, developing a distinct horticultural tradition celebrating cold-hardy varieties, native plants, and the intense joy of short-season harvests. Montreal's urban heat island pushes it close to Zone 5.

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Planting Calendar – October 2026

Quebec City

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Growing season Shoulder This month

Task	Details
Start Indoors	Finish garlic by mid-month
Direct Sow	Cover crops if beds empty
Key Tasks	Dig dahlias, cannas before frost; plant spring bulbs

Frost Dates – Quebec City

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Last Spring Frost

Early May (May 5–15)

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First Fall Frost

Early October (Oct 1–10)

Frost-free period: Approximately 130 days. Always check Environment Canada's local forecast — frost dates can vary by 2–3 weeks depending on microclimates, elevation, and annual weather patterns.